Maybe it's less than I thought. It's just disconcerting to find any and not know how many I might be missing.
This one raised my hackles, then the NIP-46 rewrite PR got me angry.

d3dad11 ("NIP-46: replace npub1...#? notation with bunker://... (#1023)", 2024-02-06)

I'm going through the git history and I've probably overblown the problem.